Can just one muslims tell the world .why they can't refute ali sina when he said the prophet is a thieft?

ali sina has said that if anyone can show that the prophet mohammad was not a thieft ,a lier, a rapist, a slave trader , a terrorist , in. m murderer, ruthless torturer that he would give 50,000 dollers to that person repent. apolizes to all muslims and commit sucide and say that mohammad is great. after 6 years all muslims say is, i wlll kill you. islam means pease and love. why want just one refute him? all people must study islam and learn what it says. the koran is the most hate filled book in history. if you dought me just read it. but we now know brainwashed idiots can't do that. why ? say isreal takes muslims girls in war, allah says and inslave them . the word of allah. look it up instead of talking foolish.